Rail-expansion-sound deadener



July 22, 1930. A. c. FISCHER 1,771,079

RAIL EXPANSION SQUND DEADENER Filed March 24, 1928' Patented July. 22, 1930 v UNITED s'rATs PATENT- OFFICE ALBERT O. FISCHER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE PHILIPOABEY MANU- FACT-URING COMPANY,

A. CORPORATION OF OHIO BAIL -E.XPANSION-SOUND DEADENEB My invention relates to a preformed, prepa'redstrip of bituminous material, made to conform to the outline of the rail, and so arranged. that it ties in or locks parts at various points, compacting the units against the rail, completely surrounding all sides of the rail, except thehead, so that the rail is completely separated from the hard paving material, surrounding-it with aninsulation material, which also acts as an expansion joint, thus deadening the impact of the car upon the rail.

My invention relates to a system of a plurality of units, preferably three. adapted to completely surround the surface sides and all ortions of the rail, except the head, whereby to provide complete weatherproofing effect, insulating elfect and sound deadening efi'ect.

Another object of niyinvention is to pro vide a multiple part rail filler adapted to enclose allsides of the rail except the head of the rail, which rail-filler is of such characteristic that while sufficiently solid and rigid to withstand shock or vibrations due to the traflic over the rail, and to permit it to be readily handled and transported, it is likewise sufiiciently plastic and sound deadening to absorb the shocks and vibrations. In addition the multipart structure is formed of weatherproofing and insulating material.

'My invention has 0 her objects, which will be apparent from a erusal of the following specification when taken in connection with the drawings, wherein,

Figure 1 is a view showing a rail filler formed of more than three arts and assembled in position about the rail. The five part structure herein being specifically the inven- 40 tion of Henry W. Herbst. as claimed in his application Serial No. 79,543, filed January 6 1926.

7 Figure 2 is a view of the five parts removed from the rail, and

Fi ure 3 is a modification of the multipart rail ller showing a rail filler of three parts completely surrounding the rail, excepting the head portion thereof, and which specific invention is disclosed and claimed in detail herein, as well as being broadly claimed.

The material of which this rail filler is composed is preferably that of a mixture of bituminous material and ground corn cobs, or 1t may consist of bituminous material, ground corn cobs and finely divided fiber, or it may consist of bituminous material and web strengthening material consisting of elongated fiat fibrous material, such as pieces of felt, paper, wood pulp, ribbon excelsior, flat wlde grasses, reed, or vegetation which is strong and consists of elongated fibrous material; or it may consist of clay treated with oil and mixed with the above described filler, or clay mixed with a ductile and oily sub stance, such as clay, suitable mineral oil, resin, and rubber compounds, mixed with the above described fibrous materials.

I do not wish to be limited to the composition of matter utilized as a binder, when mixed with any o'f'the above described formations, in so far as they are new. when adapted for expansion joint and sound deadener for rails.- Ground corn cobs are preferred, or granulated cork particles may be used. and these materials will be more suitahleiwhen considering the insulation value as against the expansion value.

Referring to the construction shown in Figures 1 and 2, it represents the rail, bb the upper rail units and 0c the lower units, and d the base unit of the five part structure.

It can "readily be seen that the base portion 00 is readily standardized in shape and form, because the shape of the base varies but little. The left hand unit 6 of the upper rail section changes more than either of the lower rail sections c0, and the right hand unit I) of the upper rail section changes many times, due to the variations in the rail occurring on this side. The base section d is almost continuously standard. The sections 00 in Figure 1 are placed in position and the sections 6?) pressed into position above the sections 00, locking the sections cc in place. The base section is then placed in position, completing the entire envelopment of the rail excepting the head of the rail.

Figure 2 illustrates the units bb separated from the rail, 00 the standardized sections tiens of the heed of the rail; These bite mineue portions are slightly adhesive end are in contact with one another.

The proportion of ground corn cob may run as high as twenty-five (25 per cent or more, but preferably twentyve 25) per cent gronndcorn cobs and seventyvc 5) per cent bituminous material. Likewise the cork granules may conform to the same formula. If finely divided fibrous material is utilized a suitable formula would be twenty (20) ,er cent ground corn cobs, ten (10) per cent nely divided fibrous material and seventy per cent bituminous material or binding material, Whatever the binder may be.

It can be readily understood that incorporation of the described fibrous material in bituminous material would insulate any of the granite, concrete or brick paving over the rail, and the cellular structure with the granules would take up the sound and prevent its transmission from the rail to the hard paving substance. The binder with the aid of the filler will also provide a suitable expansion joint material due to the compressible qualities of the bituminous or the like material, and the resiliency of the fibrous ma- 'terial mixed therewith,

A suitable formula for the bituminous material would be any blown bituminous material or any other type of bituminous material which would readily act as a binder, or the binder may consist of clay eighty per cent, mineral oil twenty (20) per cent, or it may consist of clay seventy (70) per cent, resin ten (10) per cent and a suitable mineral oil twenty (20) per cent, or it mayconsist of sixty (60) per cent clay, ten (10) er cent resin, ten (10) per cent dissolved rub er and twenty (20) per cent suitable mineral oil Any of the described filling materials adding strength and acting as a tying means for the binder, may be utilized.

1 have succeeded in eliminating projections, openings and extensions, which are readily deformable in packing, and thus have devised a material which will shape better and be in better position to fit to the rail than previously.

This application contains subject matter withdrawn from the application Serial No. 79,543, originally filed jointly by Albert C. Fischer and Henry I-lerbst, and in addition this application contains subject matter shown in Figure 3, relating to the three part structure which was originally not disclosed in said joint application.

I claim:

1 A. systemof track installation consist ing of a rail, preformed blocks of waterproofing, non-deteriorating, vibration absorbing material arranged on opposite sides and in contact with the web and underside of the head of the rail, a preformed cushion contemlhg e bltummoue meter el prevlded with. e pertlee. edeptedte he below the base of the rail, and blocks on opposite sides of the Web portion of the rail overlying thebase portion of the rail flange and enclosing the sides of the rail flange and contacting with the upper face of said cushion,

2. A. system of track installation comprising a rail and a plurality of preformed blocks of vibration absorbing bituminous material. in the form of a base and flanking plates, said flanking plates being provided with projection means extending to the, bottom face of the rail foot.

3, A system of track installation comprising a rai and a plurality of preformed blocks of vibration absorbing bituminous material in. the form of a base plate and at least two flanking plates, the base plate adapted to underlie the rail foot and extend beyond its edges, and means on the flanking plates for contacting with said base plate.

A system of track installation comprisin g a rail and a plurality of preformed blocks of vibration absorbing bituminous material in the form of a base plate and at least two flanking plates, the base plate adapted to underlie the rail foot and extend beyond its edges, and the flanking plates being of suffi- 1 cient thickness to project beyond the rail foot and provided with means to contact with the extended ends of the base plate.

5. A system of track installation comprising a rail and a. plurality of preformed blocks of vibration absorbing bituminous material in the formv of a base plate and at least two flanking plates, the base plate ada ted to un derlic the rail foot and extend eyond its edges, and the flanking plates being of suflicient thickness to ill the rail cavity and project beyond the rail foot in contact with the base plate.

Signed at Chicago, Illinois, this 22d day of ltl'arch, 19-28.

ALBERT C. FISCHER. 

